Today's Message Index:
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1. 03:11 AM - Re: OAT probe location (rampil)
2. 03:18 AM - Re: Swiss Tony (rampil)
3. 03:29 AM - Re: toroids for vhf comms aerial cable (rampil)
4. 03:49 AM - Burt Rutan the leader (GRAHAM SINGLETON)
Message 1
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| Subject: | Re: OAT probe location |
Thanks to Kevin Horton in the RV group who looked this up:
COmpression heating or ram air heating can be calculated as:
TAS in kt, and temperatures in deg C:
IOAT = OAT + ((K * TAS^2)/7592)
OAT = Outside air temperature
IOAT = indicated OAT (i.e. the value you actually see on the OAT indicator)
K = OAT probe recovery factor - usually somewhere between 0.8 and 1, if the probe
is truly stuck out in the airflow.
Therefore, in a Europa. don't expect more than about a 2C change in OAT
reading. At 200 kts, expect roughly 4C
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Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=431724#431724
Message 2
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If at first you don't succeed, try, try again!
Continued effort may discomfort both the magazine editors and he
who must not be named.
It's the least we can do!
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Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=431725#431725
Message 3
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| Subject: | Re: toroids for vhf comms aerial cable |
Just a quick note from a former electrical engineer:
While its true that ferrites are made from a variety
of materials, and in a variety of sizes, the actual
specs are NOT critical. A ferrite that fits over
whichever coax you are using and is designed
for VHF frequency work will work fine.
This isn't rocket science ;)
The ARRL Handbook is a great reference for this subject,
and Bob Nuckolls also has information on the topic on
his web site.
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Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=431726#431726
Message 4
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| Subject: | Burt Rutan the leader |
This is cool! What a lucky break for these Virgin Atlantic passengers.=0AG
=0A=0A=0Ahttp://www.chonday.com/Videos/jegalctospc2
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